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Finding the Fourth Proportional to 15,611.12, 23,416.72 and 6,377.12

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Solution

The fourth proportional to 15,611.12, 23,416.72 and 6,377.12 is: 9,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.12 : 23,416.72 = 6,377.12 : x
  2. Step 2: Convert to fraction form
    15,611.12/23,416.72 = 6,377.12/x
  3. Step 3: Cross multiply
    15,611.12x = 23,416.72 × 6,377.12
  4. Step 4: Simplify right side
    15,611.12x = 149,331,233.45
  5. Step 5: Solve for x
    x = 149,331,233.45/15,611.12
  6. Step 6: Final answer
    x = 9,565.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.